Curator

synapseclient.extensions.curator

Synapse Curator Extensions

This module provides library functions for metadata curation tasks in Synapse.

Functions

create_file_based_metadata_task

create_file_based_metadata_task(folder_id: str, curation_task_name: str, instructions: str, attach_wiki: bool = False, entity_view_name: str = 'JSON Schema view', schema_uri: Optional[str] = None, enable_derived_annotations: bool = False, *, synapse_client: Optional[Synapse] = None) -> Tuple[str, str]

Create a file view for a schema-bound folder using schematic.

Creating a file-based metadata curation task with schema binding

In this example, we create an EntityView and CurationTask for file-based metadata curation. If a schema_uri is provided, it will be bound to the folder.

import synapseclient
from synapseclient.extensions.curator import create_file_based_metadata_task

syn = synapseclient.Synapse()
syn.login()

entity_view_id, task_id = create_file_based_metadata_task(
    synapse_client=syn,
    folder_id="syn12345678",
    curation_task_name="BiospecimenMetadataTemplate",
    instructions="Please curate this metadata according to the schema requirements",
    attach_wiki=False,
    entity_view_name="Biospecimen Metadata View",
    schema_uri="sage.schemas.v2571-amp.Biospecimen.schema-0.0.1"
)

PARAMETER	DESCRIPTION
folder_id	The Synapse Folder ID to create the file view for. TYPE: str
curation_task_name	Name for the CurationTask (used as data_type field). Must be unique within the project, otherwise if it matches an existing CurationTask, that task will be updated with new data. TYPE: str
instructions	Instructions for the curation task. TYPE: str
attach_wiki	Whether or not to attach a Synapse Wiki (default: False). TYPE: bool DEFAULT: False
entity_view_name	Name for the created entity view (default: "JSON Schema view"). TYPE: str DEFAULT: 'JSON Schema view'
schema_uri	Optional JSON schema URI to bind to the folder. If provided, the schema will be bound to the folder before creating the entity view. (e.g., 'sage.schemas.v2571-amp.Biospecimen.schema-0.0.1') TYPE: Optional[str] DEFAULT: None
enable_derived_annotations	If true, enable derived annotations. Defaults to False. TYPE: bool DEFAULT: False
synapse_client	If not passed in and caching was not disabled by Synapse.allow_client_caching(False) this will use the last created instance from the Synapse class constructor. TYPE: Optional[Synapse] DEFAULT: None

RETURNS	DESCRIPTION
Tuple[str, str]	A tuple containing: - The Synapse ID of the entity view created - The task ID of the curation task created

RAISES	DESCRIPTION
ValueError	If required parameters are missing.
SynapseError	If there are issues with Synapse operations.

Source code in synapseclient/extensions/curator/file_based_metadata_task.py

def create_file_based_metadata_task(
    folder_id: str,
    curation_task_name: str,
    instructions: str,
    attach_wiki: bool = False,
    entity_view_name: str = "JSON Schema view",
    schema_uri: Optional[str] = None,
    enable_derived_annotations: bool = False,
    *,
    synapse_client: Optional[Synapse] = None,
) -> Tuple[str, str]:
    """
    Create a file view for a schema-bound folder using schematic.

    Example: Creating a file-based metadata curation task with schema binding
        In this example, we create an EntityView and CurationTask for file-based
        metadata curation. If a schema_uri is provided, it will be bound to the folder.

        ```python
        import synapseclient
        from synapseclient.extensions.curator import create_file_based_metadata_task

        syn = synapseclient.Synapse()
        syn.login()

        entity_view_id, task_id = create_file_based_metadata_task(
            synapse_client=syn,
            folder_id="syn12345678",
            curation_task_name="BiospecimenMetadataTemplate",
            instructions="Please curate this metadata according to the schema requirements",
            attach_wiki=False,
            entity_view_name="Biospecimen Metadata View",
            schema_uri="sage.schemas.v2571-amp.Biospecimen.schema-0.0.1"
        )
        ```

    Arguments:
        folder_id: The Synapse Folder ID to create the file view for.
        curation_task_name: Name for the CurationTask (used as data_type field).
            Must be unique within the project, otherwise if it matches an existing
            CurationTask, that task will be updated with new data.
        instructions: Instructions for the curation task.
        attach_wiki: Whether or not to attach a Synapse Wiki (default: False).
        entity_view_name: Name for the created entity view (default: "JSON Schema view").
        schema_uri: Optional JSON schema URI to bind to the folder. If provided,
            the schema will be bound to the folder before creating the entity view.
            (e.g., 'sage.schemas.v2571-amp.Biospecimen.schema-0.0.1')
        enable_derived_annotations: If true, enable derived annotations. Defaults to False.
        synapse_client: If not passed in and caching was not disabled by
                `Synapse.allow_client_caching(False)` this will use the last created
                instance from the Synapse class constructor.

    Returns:
        A tuple containing:
          - The Synapse ID of the entity view created
          - The task ID of the curation task created

    Raises:
        ValueError: If required parameters are missing.
        SynapseError: If there are issues with Synapse operations.
    """
    # Validate required parameters
    if not folder_id:
        raise ValueError("folder_id is required")
    if not curation_task_name:
        raise ValueError("curation_task_name is required")
    if not instructions:
        raise ValueError("instructions is required")

    synapse_client = Synapse.get_client(synapse_client=synapse_client)

    # Bind schema to folder if schema_uri is provided
    if schema_uri:
        synapse_client.logger.info(
            f"Attempting to bind schema {schema_uri} to folder {folder_id}."
        )
        try:
            folder = Folder(folder_id).get(synapse_client=synapse_client)
            folder.bind_schema(
                json_schema_uri=schema_uri,
                enable_derived_annotations=enable_derived_annotations,
                synapse_client=synapse_client,
            )
            synapse_client.logger.info(
                f"Successfully bound schema {schema_uri} to folder {folder_id}."
            )
        except Exception as e:
            synapse_client.logger.exception(
                f"Error binding schema {schema_uri} to folder {folder_id}"
            )
            raise e

    synapse_client.logger.info("Attempting to create entity view.")
    try:
        entity_view_id = create_json_schema_entity_view(
            syn=synapse_client,
            synapse_entity_id=folder_id,
            entity_view_name=entity_view_name,
        )
    except Exception as e:
        synapse_client.logger.exception("Error creating entity view")
        raise e
    synapse_client.logger.info("Created entity view.")

    if attach_wiki:
        synapse_client.logger.info("Attempting to attach wiki.")
        try:
            create_or_update_wiki_with_entity_view(
                syn=synapse_client, entity_view_id=entity_view_id, owner_id=folder_id
            )
        except Exception as e:
            synapse_client.logger.exception("Error creating wiki")
            raise e
        synapse_client.logger.info("Wiki attached.")

    # Validate that the folder has an attached JSON schema
    # The curation_task_name parameter is now required and used directly for the CurationTask.

    synapse_client.logger.info("Attempting to get the attached schema.")
    try:
        entity = get(folder_id, synapse_client=synapse_client)
        entity.get_schema(synapse_client=synapse_client)
    except Exception as e:
        synapse_client.logger.exception("Error getting the attached schema.")
        raise e
    synapse_client.logger.info("Schema retrieval successful")

    # Use the provided curation_task_name (required parameter)
    task_datatype = curation_task_name

    synapse_client.logger.info(
        "Attempting to get the Synapse ID of the provided folders project."
    )
    try:
        entity = Folder(folder_id).get(synapse_client=synapse_client)
        parent = synapse_client.get(entity.parent_id)
        project = None
        while not project:
            if parent.concreteType == "org.sagebionetworks.repo.model.Project":
                project = parent
                break
            parent = synapse_client.get(parent.parentId)
    except Exception as e:
        synapse_client.logger.exception(
            "Error getting the Synapse ID of the provided folders project"
        )
        raise e
    synapse_client.logger.info("Got the Synapse ID of the provided folders project.")

    synapse_client.logger.info("Attempting to create the CurationTask.")
    try:
        task = CurationTask(
            data_type=task_datatype,
            project_id=project.id,
            instructions=instructions,
            task_properties=FileBasedMetadataTaskProperties(
                upload_folder_id=folder_id,
                file_view_id=entity_view_id,
            ),
        ).store(synapse_client=synapse_client)
    except Exception as e:
        synapse_client.logger.exception("Error creating the CurationTask.")
        raise e
    synapse_client.logger.info("Created the CurationTask.")

    return (entity_view_id, task.task_id)

create_record_based_metadata_task

create_record_based_metadata_task(project_id: str, folder_id: str, record_set_name: str, record_set_description: str, curation_task_name: str, upsert_keys: List[str], instructions: str, schema_uri: str, bind_schema_to_record_set: bool = True, enable_derived_annotations: bool = False, *, synapse_client: Optional[Synapse] = None) -> Tuple[RecordSet, CurationTask, Grid]

Generate and upload CSV templates as a RecordSet for record-based metadata, create a CurationTask, and also create a Grid to bootstrap the ValidationStatistics.

A number of schema URIs that are already registered to Synapse can be found at:

• https://www.synapse.org/Synapse:syn69735275/tables/

If you have yet to create and register your JSON schema in Synapse, please refer to the tutorial at https://python-docs.synapse.org/en/stable/tutorials/python/json_schema/.

Creating a record-based metadata curation task with a schema URI

In this example, we create a RecordSet and CurationTask for biospecimen metadata curation using a schema URI. By default this will also bind the schema to the RecordSet, however the bind_schema_to_record_set parameter can be set to False to skip that step.

import synapseclient
from synapseclient.extensions.curator import create_record_based_metadata_task

syn = synapseclient.Synapse()
syn.login()

record_set, task, grid = create_record_based_metadata_task(
    synapse_client=syn,
    project_id="syn12345678",
    folder_id="syn87654321",
    record_set_name="BiospecimenMetadata_RecordSet",
    record_set_description="RecordSet for biospecimen metadata curation",
    curation_task_name="BiospecimenMetadataTemplate",
    upsert_keys=["specimenID"],
    instructions="Please curate this metadata according to the schema requirements",
    schema_uri="schema-org-schema.name.schema-v1.0.0"
)

PARAMETER	DESCRIPTION
project_id	The Synapse ID of the project where the folder exists. TYPE: str
folder_id	The Synapse ID of the folder to upload RecordSet to. TYPE: str
record_set_name	Name for the RecordSet. TYPE: str
record_set_description	Description for the RecordSet. TYPE: str
curation_task_name	Name for the CurationTask (used as data_type field). Must be unique within the project, otherwise if it matches an existing CurationTask, that task will be updated with new data. TYPE: str
upsert_keys	List of column names to use as upsert keys. TYPE: List[str]
instructions	Instructions for the curation task. TYPE: str
schema_uri	JSON schema URI for the RecordSet schema. (e.g., 'sage.schemas.v2571-amp.Biospecimen.schema-0.0.1', 'sage.schemas.v2571-ad.Analysis.schema-0.0.0') TYPE: str
bind_schema_to_record_set	Whether to bind the given schema to the RecordSet (default: True). TYPE: bool DEFAULT: True
enable_derived_annotations	If true, enable derived annotations. Defaults to False. TYPE: bool DEFAULT: False
synapse_client	If not passed in and caching was not disabled by Synapse.allow_client_caching(False) this will use the last created instance from the Synapse class constructor. TYPE: Optional[Synapse] DEFAULT: None

RETURNS	DESCRIPTION
Tuple[RecordSet, CurationTask, Grid]	Tuple containing the created RecordSet, CurationTask, and Grid objects

RAISES	DESCRIPTION
ValueError	If required parameters are missing or if schema_uri is not provided.
SynapseError	If there are issues with Synapse operations.

Source code in synapseclient/extensions/curator/record_based_metadata_task.py

def create_record_based_metadata_task(
    project_id: str,
    folder_id: str,
    record_set_name: str,
    record_set_description: str,
    curation_task_name: str,
    upsert_keys: List[str],
    instructions: str,
    schema_uri: str,
    bind_schema_to_record_set: bool = True,
    enable_derived_annotations: bool = False,
    *,
    synapse_client: Optional[Synapse] = None,
) -> Tuple[RecordSet, CurationTask, Grid]:
    """
    Generate and upload CSV templates as a RecordSet for record-based metadata,
    create a CurationTask, and also create a Grid to bootstrap the ValidationStatistics.

    A number of schema URIs that are already registered to Synapse can be found at:

    - <https://www.synapse.org/Synapse:syn69735275/tables/>


    If you have yet to create and register your JSON schema in Synapse, please refer to
    the tutorial at <https://python-docs.synapse.org/en/stable/tutorials/python/json_schema/>.


    Example: Creating a record-based metadata curation task with a schema URI
        In this example, we create a RecordSet and CurationTask for biospecimen metadata
        curation using a schema URI. By default this will also bind the schema to the
        RecordSet, however the `bind_schema_to_record_set` parameter can be set to
        False to skip that step.


        ```python
        import synapseclient
        from synapseclient.extensions.curator import create_record_based_metadata_task

        syn = synapseclient.Synapse()
        syn.login()

        record_set, task, grid = create_record_based_metadata_task(
            synapse_client=syn,
            project_id="syn12345678",
            folder_id="syn87654321",
            record_set_name="BiospecimenMetadata_RecordSet",
            record_set_description="RecordSet for biospecimen metadata curation",
            curation_task_name="BiospecimenMetadataTemplate",
            upsert_keys=["specimenID"],
            instructions="Please curate this metadata according to the schema requirements",
            schema_uri="schema-org-schema.name.schema-v1.0.0"
        )
        ```

    Arguments:
        project_id: The Synapse ID of the project where the folder exists.
        folder_id: The Synapse ID of the folder to upload RecordSet to.
        record_set_name: Name for the RecordSet.
        record_set_description: Description for the RecordSet.
        curation_task_name: Name for the CurationTask (used as data_type field).
            Must be unique within the project, otherwise if it matches an existing
            CurationTask, that task will be updated with new data.
        upsert_keys: List of column names to use as upsert keys.
        instructions: Instructions for the curation task.
        schema_uri: JSON schema URI for the RecordSet schema.
            (e.g., 'sage.schemas.v2571-amp.Biospecimen.schema-0.0.1', 'sage.schemas.v2571-ad.Analysis.schema-0.0.0')
        bind_schema_to_record_set: Whether to bind the given schema to the RecordSet
            (default: True).
        enable_derived_annotations: If true, enable derived annotations. Defaults to False.
        synapse_client: If not passed in and caching was not disabled by
                `Synapse.allow_client_caching(False)` this will use the last created
                instance from the Synapse class constructor.

    Returns:
        Tuple containing the created RecordSet, CurationTask, and Grid objects

    Raises:
        ValueError: If required parameters are missing or if schema_uri is not provided.
        SynapseError: If there are issues with Synapse operations.
    """
    # Validate required parameters
    if not project_id:
        raise ValueError("project_id is required")
    if not folder_id:
        raise ValueError("folder_id is required")
    if not record_set_name:
        raise ValueError("record_set_name is required")
    if not record_set_description:
        raise ValueError("record_set_description is required")
    if not curation_task_name:
        raise ValueError("curation_task_name is required")
    if not upsert_keys:
        raise ValueError("upsert_keys is required and must be a non-empty list")
    if not instructions:
        raise ValueError("instructions is required")
    if not schema_uri:
        raise ValueError("schema_uri is required")

    synapse_client = Synapse.get_client(synapse_client=synapse_client)

    template_df = extract_schema_properties_from_web(
        syn=synapse_client, schema_uri=schema_uri
    )
    synapse_client.logger.info(
        f"Extracted schema properties and created template: {template_df.columns.tolist()}"
    )

    tmp = tempfile.NamedTemporaryFile(delete=False, suffix=".csv")
    try:
        with open(tmp.name, "w", encoding="utf-8") as f:
            template_df.to_csv(f, index=False)
    except Exception as e:
        synapse_client.logger.exception("Error writing template to temporary CSV file")
        raise e

    try:
        record_set_with_data = RecordSet(
            name=record_set_name,
            parent_id=folder_id,
            description=record_set_description,
            path=tmp.name,
            upsert_keys=upsert_keys,
        ).store(synapse_client=synapse_client)
        record_set_id = record_set_with_data.id
        synapse_client.logger.info(
            f"Created RecordSet with ID: {record_set_id} in folder {folder_id}"
        )

        if bind_schema_to_record_set:
            record_set_with_data.bind_schema(
                json_schema_uri=schema_uri,
                enable_derived_annotations=enable_derived_annotations,
                synapse_client=synapse_client,
            )
            synapse_client.logger.info(
                f"Bound schema {schema_uri} to RecordSet ID: {record_set_id}"
            )
    except Exception as e:
        synapse_client.logger.exception("Error creating RecordSet in Synapse")
        raise e

    try:
        curation_task = CurationTask(
            data_type=curation_task_name,
            project_id=project_id,
            instructions=instructions,
            task_properties=RecordBasedMetadataTaskProperties(
                record_set_id=record_set_id,
            ),
        ).store(synapse_client=synapse_client)
        synapse_client.logger.info(
            f"Created CurationTask ({curation_task.task_id}) with name {curation_task_name}"
        )
    except Exception as e:
        synapse_client.logger.error(f"Error creating CurationTask in Synapse: {e}")
        raise e

    try:
        curation_grid: Grid = Grid(
            record_set_id=record_set_id,
        )
        curation_grid.create(synapse_client=synapse_client)
        curation_grid = curation_grid.export_to_record_set(
            synapse_client=synapse_client
        )
        synapse_client.logger.info(
            f"Created Grid view for RecordSet ID: {record_set_id} for curation task {curation_task_name}"
        )
    except Exception as e:
        synapse_client.logger.exception("Error creating Grid view in Synapse")
        raise e

    return record_set_with_data, curation_task, curation_grid

generate_jsonld

generate_jsonld(schema: Any, data_model_labels: DisplayLabelType, output_jsonld: Optional[str], *, synapse_client: Optional[Synapse] = None) -> dict

Convert a CSV data model specification to JSON-LD format with validation and error checking.

This function parses your CSV data model (containing attributes, validation rules, dependencies, and valid values), converts it to a graph-based JSON-LD representation, validates the structure for common errors, and saves the result. The generated JSON-LD file serves as input for generate_jsonschema() and other data model operations.

Data Model Requirements:

Your CSV should include columns defining:

• Attribute names: Property/attribute identifiers
• Display names: Human-readable labels (optional but recommended)
• Descriptions: Documentation for each attribute
• Valid values: Allowed enum values for attributes (comma-separated)
• Validation rules: Rules like list, regex, inRange, required, etc.
• Dependencies: Relationships between attributes using dependsOn
• Required status: Whether attributes are mandatory

Validation Checks Performed:

• Ensures all required fields (like displayName) are present
• Detects cycles in attribute dependencies (which would create invalid schemas)
• Checks for blacklisted characters in display names that Synapse doesn't allow
• Validates that attribute names don't conflict with reserved system names
• Verifies the graph structure is a valid directed acyclic graph (DAG)

PARAMETER	DESCRIPTION
schema	Path or URL to your data model CSV file. Can be a local file path or a URL (e.g., from GitHub). This file should contain your complete data model specification with all attributes, validation rules, and relationships. TYPE: Any
data_model_labels	Label format for the JSON-LD output: "class_label" (default, recommended): Uses standard attribute names as labels "display_label": Uses display names as labels if they contain no blacklisted characters (parentheses, periods, spaces, hyphens), otherwise falls back to class labels. Use cautiously as this can affect downstream compatibility. TYPE: DisplayLabelType
output_jsonld	Path where the JSON-LD file will be saved. If None, saves alongside the input CSV with a .jsonld extension (e.g., model.csv → model.jsonld). TYPE: Optional[str]
synapse_client	Optional Synapse client instance for logging. If None, creates a new client instance. Use Synapse.get_client() or pass an authenticated client. TYPE: Optional[Synapse] DEFAULT: None

Output:

The function logs validation errors and warnings to help you fix data model issues before generating JSON schemas. Errors indicate critical problems that must be fixed, while warnings suggest improvements but won't block schema generation.

RETURNS	DESCRIPTION
dict	The generated data model as a dictionary in JSON-LD format. The same data is also saved to the file path specified in output_jsonld.

Using this function to generate JSONLD Schema files:

Basic usage with default output path:

from synapseclient import Synapse
from synapseclient.extensions.curator import generate_jsonld

syn = Synapse()
syn.login()

jsonld_model = generate_jsonld(
    schema="path/to/my_data_model.csv",
    data_model_labels="class_label",
    output_jsonld=None,  # Saves to my_data_model.jsonld
    synapse_client=syn
)

Specify custom output path:

jsonld_model = generate_jsonld(
    schema="models/patient_model.csv",
    data_model_labels="class_label",
    output_jsonld="~/output/patient_model_v1.jsonld",
    synapse_client=syn
)

Use display labels:

jsonld_model = generate_jsonld(
    schema="my_model.csv",
    data_model_labels="display_label",
    output_jsonld="my_model.jsonld",
    synapse_client=syn
)

Load from URL:

jsonld_model = generate_jsonld(
    schema="https://raw.githubusercontent.com/org/repo/main/model.csv",
    data_model_labels="class_label",
    output_jsonld="downloaded_model.jsonld",
    synapse_client=syn
)

Source code in synapseclient/extensions/curator/schema_generation.py

def generate_jsonld(
    schema: Any,
    data_model_labels: DisplayLabelType,
    output_jsonld: Optional[str],
    *,
    synapse_client: Optional[Synapse] = None,
) -> dict:
    """
    Convert a CSV data model specification to JSON-LD format with validation and error checking.

    This function parses your CSV data model (containing attributes, validation rules,
    dependencies, and valid values), converts it to a graph-based JSON-LD representation,
    validates the structure for common errors, and saves the result. The generated JSON-LD
    file serves as input for `generate_jsonschema()` and other data model operations.

    **Data Model Requirements:**

    Your CSV should include columns defining:

    - **Attribute names**: Property/attribute identifiers
    - **Display names**: Human-readable labels (optional but recommended)
    - **Descriptions**: Documentation for each attribute
    - **Valid values**: Allowed enum values for attributes (comma-separated)
    - **Validation rules**: Rules like `list`, `regex`, `inRange`, `required`, etc.
    - **Dependencies**: Relationships between attributes using `dependsOn`
    - **Required status**: Whether attributes are mandatory

    **Validation Checks Performed:**

    - Ensures all required fields (like `displayName`) are present
    - Detects cycles in attribute dependencies (which would create invalid schemas)
    - Checks for blacklisted characters in display names that Synapse doesn't allow
    - Validates that attribute names don't conflict with reserved system names
    - Verifies the graph structure is a valid directed acyclic graph (DAG)

    Arguments:
        schema: Path or URL to your data model CSV file. Can be a local file path or a URL
            (e.g., from GitHub). This file should contain your complete data model
            specification with all attributes, validation rules, and relationships.
        data_model_labels: Label format for the JSON-LD output:

            - `"class_label"` (default, recommended): Uses standard attribute names as labels
            - `"display_label"`: Uses display names as labels if they contain no blacklisted
              characters (parentheses, periods, spaces, hyphens), otherwise falls back to
              class labels. Use cautiously as this can affect downstream compatibility.
        output_jsonld: Path where the JSON-LD file will be saved. If None, saves alongside
            the input CSV with a `.jsonld` extension (e.g., `model.csv` → `model.jsonld`).
        synapse_client: Optional Synapse client instance for logging. If None, creates a
            new client instance. Use `Synapse.get_client()` or pass an authenticated client.

    **Output:**

    The function logs validation errors and warnings to help you fix data model issues
    before generating JSON schemas. Errors indicate critical problems that must be fixed,
    while warnings suggest improvements but won't block schema generation.

    Returns:
        The generated data model as a dictionary in JSON-LD format. The same data is
            also saved to the file path specified in `output_jsonld`.


    Example: Using this function to generate JSONLD Schema files:
        Basic usage with default output path:

        ```python
        from synapseclient import Synapse
        from synapseclient.extensions.curator import generate_jsonld

        syn = Synapse()
        syn.login()

        jsonld_model = generate_jsonld(
            schema="path/to/my_data_model.csv",
            data_model_labels="class_label",
            output_jsonld=None,  # Saves to my_data_model.jsonld
            synapse_client=syn
        )
        ```

        Specify custom output path:

        ```python
        jsonld_model = generate_jsonld(
            schema="models/patient_model.csv",
            data_model_labels="class_label",
            output_jsonld="~/output/patient_model_v1.jsonld",
            synapse_client=syn
        )
        ```

        Use display labels:
        ```python
        jsonld_model = generate_jsonld(
            schema="my_model.csv",
            data_model_labels="display_label",
            output_jsonld="my_model.jsonld",
            synapse_client=syn
        )
        ```

        Load from URL:
        ```python
        jsonld_model = generate_jsonld(
            schema="https://raw.githubusercontent.com/org/repo/main/model.csv",
            data_model_labels="class_label",
            output_jsonld="downloaded_model.jsonld",
            synapse_client=syn
        )
        ```
    """
    check_curator_imports()
    syn = Synapse.get_client(synapse_client=synapse_client)

    # Instantiate Parser
    data_model_parser = DataModelParser(path_to_data_model=schema, logger=syn.logger)

    # Parse Model
    syn.logger.info("Parsing data model.")
    parsed_data_model = data_model_parser.parse_model()

    # Convert parsed model to graph
    # Instantiate DataModelGraph
    data_model_grapher = DataModelGraph(
        parsed_data_model, data_model_labels, syn.logger
    )

    # Generate graphschema
    syn.logger.info("Generating data model graph.")
    graph_data_model = data_model_grapher.graph

    # Validate generated data model.
    syn.logger.info("Validating the data model internally.")
    data_model_validator = DataModelValidator(graph=graph_data_model, logger=syn.logger)
    data_model_errors, data_model_warnings = data_model_validator.run_checks()

    # If there are errors log them.
    if data_model_errors:
        for err in data_model_errors:
            if isinstance(err, str):
                syn.logger.error(err)
            elif isinstance(err, list):
                for error in err:
                    syn.logger.error(error)

    # If there are warnings log them.
    if data_model_warnings:
        for war in data_model_warnings:
            if isinstance(war, str):
                syn.logger.warning(war)
            elif isinstance(war, list):
                for warning in war:
                    syn.logger.warning(warning)

    syn.logger.info("Converting data model to JSON-LD")
    jsonld_data_model = convert_graph_to_jsonld(
        graph=graph_data_model, logger=syn.logger
    )

    # output JSON-LD file alongside CSV file by default, get path.
    if output_jsonld is None:
        if ".jsonld" not in schema:
            # If schema is a URL, extract just the filename for local output
            schema_path = schema
            if schema.startswith("http://") or schema.startswith("https://"):
                from urllib.parse import urlparse

                parsed_url = urlparse(schema)
                schema_path = os.path.basename(parsed_url.path)
            csv_no_ext = re.sub("[.]csv$", "", schema_path)
            output_jsonld = csv_no_ext + ".jsonld"
        else:
            output_jsonld = schema

        syn.logger.info(
            "By default, the JSON-LD output will be stored alongside the first "
            f"input CSV or JSON-LD file. In this case, it will appear here: '{output_jsonld}'. "
            "You can use the `--output_jsonld` argument to specify another file path."
        )

    # saving updated schema.org schema
    try:
        export_schema(
            schema=jsonld_data_model, file_path=output_jsonld, logger=syn.logger
        )
    except Exception:
        syn.logger.exception(
            (
                f"The Data Model could not be created by using '{output_jsonld}' location. "
                "Please check your file path again"
            )
        )
    return jsonld_data_model

generate_jsonschema

generate_jsonschema(data_model_source: str, synapse_client: Synapse, data_types: Optional[list[str]] = None, output: Optional[str] = None, data_model_labels: DisplayLabelType = 'class_label') -> tuple[list[dict[str, Any]], list[str]]

Generate JSON Schema files from a data model.

PARAMETER	DESCRIPTION
data_model_source	Path or URL to the data model file (CSV or JSONLD). Can accept: - A local CSV file with your data model specification (will be parsed automatically) - A local JSONLD file generated from generate_jsonld() or equivalent - A URL pointing to a raw CSV data model (e.g., from GitHub) - A URL pointing to a raw JSONLD data model (e.g., from GitHub) TYPE: str
synapse_client	Synapse client instance for logging. Use Synapse.get_client() or pass an existing authenticated client. TYPE: Synapse
data_types	List of specific cdata types to generate schemas for. If None, generates schemas for all data types in the data model. TYPE: Optional[list[str]] DEFAULT: None
output	One of: None, a directory path, or a file path. - If None, schemas will be written to the current working directory, with filenames formatted as <DataType>.json. - If a directory path, schemas will be written to that directory, with filenames formatted as <Output>/<DataType>.json. - If a file path (must end with .json) and a single data type is specified, the schema for that data type will be written to that file. TYPE: Optional[str] DEFAULT: None
data_model_labels	Label format for properties in the generated schema: - "class_label" (default): Uses standard attribute names as property keys - "display_label": Uses display names if valid (no blacklisted characters),. TYPE: DisplayLabelType DEFAULT: 'class_label'

RETURNS	DESCRIPTION
tuple[list[dict[str, Any]], list[str]]	A tuple containing: - A list of JSON schema dictionaries, each corresponding to a data type - A list of file paths where the schemas were written

RAISES	DESCRIPTION
ValueError	If a single output file is specified but multiple data types are requested.

Using this function to generate JSON Schema files:

Generate schema for one datatype:

from synapseclient import Synapse
from synapseclient.extensions.curator import generate_jsonschema

syn = Synapse()
syn.login()

schemas, file_paths = generate_jsonschema(
    data_model_source="path/to/model.csv",
    output="output.json",
    data_types=["Patient"],
    synapse_client=syn
)

Generate schema for specific data types:

schemas, file_paths = generate_jsonschema(
    data_model_source="path/to/model.csv",
    output="./schemas",
    data_types=["Patient", "Biospecimen"],
    synapse_client=syn
)

Generate schemas for all data types:

schemas, file_paths = generate_jsonschema(
    data_model_source="path/to/model.csv",
    output="./schemas",
    synapse_client=syn
)

Generate schema from CSV URL:

schemas, file_paths = generate_jsonschema(
    data_model_source="https://raw.githubusercontent.com/org/repo/main/model.csv",
    output_directory="./schemas",
    data_type=None,
    data_model_labels="class_label",
    synapse_client=syn
)

Source code in synapseclient/extensions/curator/schema_generation.py

def generate_jsonschema(
    data_model_source: str,
    synapse_client: Synapse,
    data_types: Optional[list[str]] = None,
    output: Optional[str] = None,
    data_model_labels: DisplayLabelType = "class_label",
) -> tuple[list[dict[str, Any]], list[str]]:
    """
    Generate JSON Schema files from a data model.

    Arguments:
        data_model_source: Path or URL to the data model file (CSV or JSONLD). Can accept:
            - A local CSV file with your data model specification (will be parsed automatically)
            - A local JSONLD file generated from `generate_jsonld()` or equivalent
            - A URL pointing to a raw CSV data model (e.g., from GitHub)
            - A URL pointing to a raw JSONLD data model (e.g., from GitHub)
        synapse_client: Synapse client instance for logging. Use `Synapse.get_client()`
            or pass an existing authenticated client.
        data_types: List of specific cdata types to generate schemas for. If None, generates schemas for all data types in the data model.
        output: One of: None, a directory path, or a file path.
            - If None, schemas will be written to the current working directory, with filenames formatted as `<DataType>.json`.
            - If a directory path, schemas will be written to that directory, with filenames formatted as `<Output>/<DataType>.json`.
            - If a file path (must end with `.json`) and a single data type is specified, the schema for that data type will be written to that file.
        data_model_labels: Label format for properties in the generated schema:
            - `"class_label"` (default): Uses standard attribute names as property keys
            - `"display_label"`: Uses display names if valid (no blacklisted characters),.

    Returns:
        A tuple containing:
            - A list of JSON schema dictionaries, each corresponding to a data type
            - A list of file paths where the schemas were written

    Raises:
        ValueError: If a single output file is specified but multiple data types are requested.

    Example: Using this function to generate JSON Schema files:
        Generate schema for one datatype:

        ```python
        from synapseclient import Synapse
        from synapseclient.extensions.curator import generate_jsonschema

        syn = Synapse()
        syn.login()

        schemas, file_paths = generate_jsonschema(
            data_model_source="path/to/model.csv",
            output="output.json",
            data_types=["Patient"],
            synapse_client=syn
        )
        ```

        Generate schema for specific data types:

        ```python
        schemas, file_paths = generate_jsonschema(
            data_model_source="path/to/model.csv",
            output="./schemas",
            data_types=["Patient", "Biospecimen"],
            synapse_client=syn
        )
        ```

        Generate schemas for all data types:

        ```python
        schemas, file_paths = generate_jsonschema(
            data_model_source="path/to/model.csv",
            output="./schemas",
            synapse_client=syn
        )
        ```

        Generate schema from CSV URL:

        ```python
        schemas, file_paths = generate_jsonschema(
            data_model_source="https://raw.githubusercontent.com/org/repo/main/model.csv",
            output_directory="./schemas",
            data_type=None,
            data_model_labels="class_label",
            synapse_client=syn
        )
        ```
    """
    check_curator_imports()
    data_model_parser = DataModelParser(
        path_to_data_model=data_model_source, logger=synapse_client.logger
    )
    parsed_data_model = data_model_parser.parse_model()
    data_model_graph = DataModelGraph(parsed_data_model)
    graph_data_model = data_model_graph.graph
    dmge = DataModelGraphExplorer(graph_data_model, logger=synapse_client.logger)

    if output is None:
        dirname = "./"
    elif output.endswith(".json"):
        dirname = os.path.dirname(output)
        dirname = dirname if dirname else "./"
    else:
        dirname = output
    os.makedirs(dirname, exist_ok=True)

    # Gets all data types if none are specified
    if data_types is None or len(data_types) == 0:
        data_types = [
            node for node in dmge.find_classes() if dmge.get_node_is_template(node)
        ]

    if len(data_types) == 0:
        msg = (
            "No data types found in the data model. "
            "Please ensure the data model is correctly specified. "
            "Use the 'IsTemplate' column in your data model to define data types."
        )
        raise ValueError(msg)

    if len(data_types) != 1 and output is not None and output.endswith(".json"):
        raise ValueError(
            f"Cannot write {len(data_types)} schemas to single file '{output}'. "
            "Specify a directory path instead, or request only one data type."
        )

    if len(data_types) == 1 and output is not None and output.endswith(".json"):
        schema_paths = [output]
    else:
        schema_paths = [
            os.path.join(dirname, f"{data_type}.json") for data_type in data_types
        ]

    schemas = [
        create_json_schema(
            dmge=dmge,
            datatype=data_type,
            schema_name=data_type,
            logger=synapse_client.logger,
            write_schema=True,
            schema_path=schema_path,
            use_property_display_names=(data_model_labels == "display_label"),
        )
        for data_type, schema_path in zip(data_types, schema_paths)
    ]
    return schemas, schema_paths

query_schema_registry

query_schema_registry(synapse_client: Optional[Synapse] = None, schema_registry_table_id: Optional[str] = None, column_config: Optional[SchemaRegistryColumnConfig] = None, return_latest_only: bool = True, **filters) -> Union[str, List[str], None]

Query the schema registry table to find schemas matching the provided filters.

This function searches the Synapse schema registry table for schemas that match the provided filter parameters. Results are sorted by version in descending order (newest first). The function supports any number of filter parameters as long as they are configured in the column_config.

PARAMETER	DESCRIPTION
synapse_client	Optional authenticated Synapse client instance TYPE: Optional[Synapse] DEFAULT: None
schema_registry_table_id	Optional Synapse ID of the schema registry table. If None, uses the default table ID. TYPE: Optional[str] DEFAULT: None
column_config	Optional configuration for custom column names. If None, uses default configuration ('version' and 'uri' columns). TYPE: Optional[SchemaRegistryColumnConfig] DEFAULT: None
return_latest_only	If True (default), returns only the latest URI as a string. If False, returns all matching URIs as a list of strings. TYPE: bool DEFAULT: True
**filters	Filter parameters to search for matching schemas. These work as follows: Column-Based Filtering: - Any column name in the schema registry table can be used as a filter - Pass column names directly as keyword arguments - Common filters: dcc, datatype, version, uri - Any additional columns in your table can be used Filter Values: - Exact matching: Use plain strings (e.g., dcc="ad") - Pattern matching: Use SQL LIKE patterns with wildcards: * % = any sequence of characters - Examples: * dcc="ad" → matches exactly "ad" * datatype="%spec%" → matches any datatype containing "spec" Filter Logic: - Multiple filters are combined with AND (all must match) - At least one filter must be provided DEFAULT: {}

RETURNS	DESCRIPTION
Union[str, List[str], None]	If return_latest_only is True: Single URI string of the latest version, or None if not found
Union[str, List[str], None]	If return_latest_only is False: List of URI strings sorted by version (highest version first)

RAISES	DESCRIPTION
ValueError	If no filter parameters are provided

Expected Table Structure

The schema registry table should contain columns for:

• Schema version for sorting (default: 'version')
• JSON schema URI (default: 'uri')
• Any filterable columns as configured in column_config

Additional columns may be present and will be included in results.

Comprehensive filter usage demonstrations

This includes several examples of how to use the filtering system.

Basic Filtering (using default filters):

from synapseclient import Synapse
from synapseclient.extensions.curator import query_schema_registry

syn = Synapse()
syn.login()

# 1. Get latest schema URI for a specific DCC and datatype
latest_uri = query_schema_registry(
    synapse_client=syn,
    dcc="ad",  # Exact match for Alzheimer's Disease DCC
    datatype="Analysis"  # Exact datatype match
)
# Returns: "sage.schemas.v2571-ad.Analysis.schema-0.0.0"

# 2. Get all versions of matching schemas (not just latest)
all_versions = query_schema_registry(
    synapse_client=syn,
    dcc="mc2",
    datatype="Biospecimen",
    return_latest_only=False
)
# Returns: ["MultiConsortiaCoordinatingCenter-Biospecimen-12.0.0",
#           "sage.schemas.v2571-mc2.Biospecimen.schema-9.0.0"]

# 3. Pattern matching with wildcards
# Find all "Biospecimen" schemas across all DCCs
biospecimen_schemas = query_schema_registry(
    synapse_client=syn,
    datatype="Biospecimen",  # Exact match for Biospecimen
    return_latest_only=False
)
# Returns: ["MultiConsortiaCoordinatingCenter-Biospecimen-12.0.0",
#           "sage.schemas.v2571-mc2.Biospecimen.schema-9.0.0",
#           "sage.schemas.v2571-veo.Biospecimen.schema-0.3.0",
#           "sage.schemas.v2571-amp.Biospecimen.schema-0.0.1"]

# 4. Pattern matching for DCC variations
mc2_schemas = query_schema_registry(
    synapse_client=syn,
    dcc="%C2",  # Matches 'mc2' and 'MC2'
    return_latest_only=False
)
# Returns schemas from both 'mc2' and 'MC2' DCCs

# 5. Using additional columns for filtering (if they exist in your table)
specific_schemas = query_schema_registry(
    synapse_client=syn,
    dcc="amp",  # Must be AMP DCC
    org="sage.schemas.v2571",  # Must match organization
    return_latest_only=False
)
# Returns schemas that match BOTH conditions

Direct Column Filtering (simplified approach):

# Any column in the schema registry table can be used for filtering
# Just use the column name directly as a keyword argument

# Basic filters using standard columns
query_schema_registry(dcc="ad", datatype="Analysis")
query_schema_registry(version="0.0.0")
query_schema_registry(uri="sage.schemas.v2571-ad.Analysis.schema-0.0.0")

# Additional columns (if they exist in your table)
query_schema_registry(org="sage.schemas.v2571")
query_schema_registry(name="ad.Analysis.schema")

# Multiple column filters (all must match)
query_schema_registry(
    dcc="mc2",
    datatype="Biospecimen",
    org="MultiConsortiaCoordinatingCenter"
)

Filter Value Examples with Real Data:

# Exact matching
query_schema_registry(dcc="ad")                   # Returns schemas with dcc="ad"
query_schema_registry(datatype="Biospecimen")     # Returns schemas with datatype="Biospecimen"
query_schema_registry(dcc="MC2")                  # Returns schemas with dcc="MC2" (case sensitive)

# Pattern matching with wildcards
query_schema_registry(dcc="%C2")                   # Matches "mc2", "MC2"
query_schema_registry(datatype="%spec%")           # Matches "Biospecimen"

# Examples with expected results:
query_schema_registry(dcc="ad", datatype="Analysis")
# Returns: "sage.schemas.v2571-ad.Analysis.schema-0.0.0"

query_schema_registry(datatype="Biospecimen", return_latest_only=False)
# Returns: ["MultiConsortiaCoordinatingCenter-Biospecimen-12.0.0",
#           "sage.schemas.v2571-mc2.Biospecimen.schema-9.0.0", ...]

# Multiple conditions (all must be true)
query_schema_registry(
    dcc="amp",             # AND
    datatype="Biospecimen", # AND
    org="sage.schemas.v2571"  # AND (if org column exists)
)
# Returns: ["sage.schemas.v2571-amp.Biospecimen.schema-0.0.1"]

Source code in synapseclient/extensions/curator/schema_registry.py

def query_schema_registry(
    synapse_client: Optional[Synapse] = None,
    schema_registry_table_id: Optional[str] = None,
    column_config: Optional[SchemaRegistryColumnConfig] = None,
    return_latest_only: bool = True,
    **filters,
) -> Union[str, List[str], None]:
    """
    Query the schema registry table to find schemas matching the provided filters.

    This function searches the Synapse schema registry table for schemas that match
    the provided filter parameters. Results are sorted by version in descending order
    (newest first). The function supports any number of filter parameters as long as
    they are configured in the column_config.

    Arguments:
        synapse_client: Optional authenticated Synapse client instance
        schema_registry_table_id: Optional Synapse ID of the schema registry table.
                                  If None, uses the default table ID.
        column_config: Optional configuration for custom column names.
                      If None, uses default configuration ('version' and 'uri' columns).
        return_latest_only: If True (default), returns only the latest URI as a string.
                           If False, returns all matching URIs as a list of strings.
        **filters: Filter parameters to search for matching schemas. These work as follows:

                  Column-Based Filtering:
                  - Any column name in the schema registry table can be used as a filter
                  - Pass column names directly as keyword arguments
                  - Common filters: dcc, datatype, version, uri
                  - Any additional columns in your table can be used

                  Filter Values:
                  - Exact matching: Use plain strings (e.g., dcc="ad")
                  - Pattern matching: Use SQL LIKE patterns with wildcards:
                    * % = any sequence of characters
                  - Examples:
                    * dcc="ad" → matches exactly "ad"
                    * datatype="%spec%" → matches any datatype containing "spec"

                  Filter Logic:
                  - Multiple filters are combined with AND (all must match)
                  - At least one filter must be provided

    Returns:
        If return_latest_only is True: Single URI string of the latest version, or None if not found
        If return_latest_only is False: List of URI strings sorted by version (highest version first)

    Raises:
        ValueError: If no filter parameters are provided

    Expected Table Structure:
        The schema registry table should contain columns for:

        - Schema version for sorting (default: 'version')
        - JSON schema URI (default: 'uri')
        - Any filterable columns as configured in column_config

        Additional columns may be present and will be included in results.

    Example: Comprehensive filter usage demonstrations
        This includes several examples of how to use the filtering system.

        Basic Filtering (using default filters):
        ```python
        from synapseclient import Synapse
        from synapseclient.extensions.curator import query_schema_registry

        syn = Synapse()
        syn.login()

        # 1. Get latest schema URI for a specific DCC and datatype
        latest_uri = query_schema_registry(
            synapse_client=syn,
            dcc="ad",  # Exact match for Alzheimer's Disease DCC
            datatype="Analysis"  # Exact datatype match
        )
        # Returns: "sage.schemas.v2571-ad.Analysis.schema-0.0.0"

        # 2. Get all versions of matching schemas (not just latest)
        all_versions = query_schema_registry(
            synapse_client=syn,
            dcc="mc2",
            datatype="Biospecimen",
            return_latest_only=False
        )
        # Returns: ["MultiConsortiaCoordinatingCenter-Biospecimen-12.0.0",
        #           "sage.schemas.v2571-mc2.Biospecimen.schema-9.0.0"]

        # 3. Pattern matching with wildcards
        # Find all "Biospecimen" schemas across all DCCs
        biospecimen_schemas = query_schema_registry(
            synapse_client=syn,
            datatype="Biospecimen",  # Exact match for Biospecimen
            return_latest_only=False
        )
        # Returns: ["MultiConsortiaCoordinatingCenter-Biospecimen-12.0.0",
        #           "sage.schemas.v2571-mc2.Biospecimen.schema-9.0.0",
        #           "sage.schemas.v2571-veo.Biospecimen.schema-0.3.0",
        #           "sage.schemas.v2571-amp.Biospecimen.schema-0.0.1"]

        # 4. Pattern matching for DCC variations
        mc2_schemas = query_schema_registry(
            synapse_client=syn,
            dcc="%C2",  # Matches 'mc2' and 'MC2'
            return_latest_only=False
        )
        # Returns schemas from both 'mc2' and 'MC2' DCCs

        # 5. Using additional columns for filtering (if they exist in your table)
        specific_schemas = query_schema_registry(
            synapse_client=syn,
            dcc="amp",  # Must be AMP DCC
            org="sage.schemas.v2571",  # Must match organization
            return_latest_only=False
        )
        # Returns schemas that match BOTH conditions
        ```

        Direct Column Filtering (simplified approach):
        ```python
        # Any column in the schema registry table can be used for filtering
        # Just use the column name directly as a keyword argument

        # Basic filters using standard columns
        query_schema_registry(dcc="ad", datatype="Analysis")
        query_schema_registry(version="0.0.0")
        query_schema_registry(uri="sage.schemas.v2571-ad.Analysis.schema-0.0.0")

        # Additional columns (if they exist in your table)
        query_schema_registry(org="sage.schemas.v2571")
        query_schema_registry(name="ad.Analysis.schema")

        # Multiple column filters (all must match)
        query_schema_registry(
            dcc="mc2",
            datatype="Biospecimen",
            org="MultiConsortiaCoordinatingCenter"
        )
        ```

        Filter Value Examples with Real Data:
        ```python
        # Exact matching
        query_schema_registry(dcc="ad")                   # Returns schemas with dcc="ad"
        query_schema_registry(datatype="Biospecimen")     # Returns schemas with datatype="Biospecimen"
        query_schema_registry(dcc="MC2")                  # Returns schemas with dcc="MC2" (case sensitive)

        # Pattern matching with wildcards
        query_schema_registry(dcc="%C2")                   # Matches "mc2", "MC2"
        query_schema_registry(datatype="%spec%")           # Matches "Biospecimen"

        # Examples with expected results:
        query_schema_registry(dcc="ad", datatype="Analysis")
        # Returns: "sage.schemas.v2571-ad.Analysis.schema-0.0.0"

        query_schema_registry(datatype="Biospecimen", return_latest_only=False)
        # Returns: ["MultiConsortiaCoordinatingCenter-Biospecimen-12.0.0",
        #           "sage.schemas.v2571-mc2.Biospecimen.schema-9.0.0", ...]

        # Multiple conditions (all must be true)
        query_schema_registry(
            dcc="amp",             # AND
            datatype="Biospecimen", # AND
            org="sage.schemas.v2571"  # AND (if org column exists)
        )
        # Returns: ["sage.schemas.v2571-amp.Biospecimen.schema-0.0.1"]
        ```
    """
    syn = Synapse.get_client(synapse_client=synapse_client)
    logger = syn.logger

    # Use provided table ID or default
    table_id = (
        schema_registry_table_id
        if schema_registry_table_id
        else SCHEMA_REGISTRY_TABLE_ID
    )

    # Use provided column config or default
    if column_config is None:
        column_config = SchemaRegistryColumnConfig()

    # Validate that we have at least one filter
    if not filters:
        raise ValueError("At least one filter parameter must be provided")

    # Build WHERE clause from filters using column names directly
    where_conditions = []
    for column_name, filter_value in filters.items():
        # Check if the value contains SQL wildcards (% or _)
        if isinstance(filter_value, str) and (
            "%" in filter_value or "_" in filter_value
        ):
            # Use LIKE for pattern matching
            where_conditions.append(f"{column_name} LIKE '{filter_value}'")
        else:
            # Use exact match
            where_conditions.append(f"{column_name} = '{filter_value}'")

    where_clause = " AND ".join(where_conditions)

    # Construct SQL query using configurable column names
    # Results are sorted by version in descending order (newest first)
    query = f"""
    SELECT * FROM {table_id}
    WHERE {where_clause}
    ORDER BY {column_config.version_column} DESC
    """

    # Create a readable filter summary for logging
    filter_summary = ", ".join([f"{k}='{v}'" for k, v in filters.items()])

    logger.info(f"Querying schema registry with filters: {filter_summary}")
    logger.info(f"Using table: {table_id}")
    logger.info(f"SQL Query: {query}")

    # Query the table and get results as a pandas DataFrame
    table = Table(id=table_id)
    results_df = table.query(query=query, synapse_client=syn)

    if results_df.empty:
        logger.info(f"No schemas found matching filters: {filter_summary}")
        return None if return_latest_only else []

    # Extract URIs from the results and return as a list of strings
    uri_list = results_df[column_config.uri_column].tolist()

    logger.info(f"Found {len(uri_list)} matching schema(s):")
    for i, uri in enumerate(uri_list, 1):
        logger.info(f"  {i}. URI: {uri}")

    if return_latest_only:
        return uri_list[0] if uri_list else None
    else:
        return uri_list